Private equity targets $700m law firm deal

Private equity firm Charlesbank Capital Partners is in advanced talks to acquire a stake in national law firm Wood Smith Henning & Berman in a deal reportedly valued at $700 million. Neither party has confirmed the negotiations, which remain subject to change. If finalized, the transaction would mark one of the most significant tests yet of private equity’s ability to gain a financial foothold in a major U.S. corporate law firm without violating longstanding rules against non-lawyer ownership.

WSHB operates on a large scale. The firm employs more than 500 lawyers across 43 offices in 35 states and London, handling complex civil litigation and counseling for corporations, insurers, and other institutional clients. Its practice areas include insurance, construction, professional liability, employment, and product liability.

Founded in 1997 by four attorneys, WSHB has promoted an “open-door, non-hierarchical culture,” positioning itself as a collaborative alternative to traditional Big Law partnerships. That size and client base make the reported deal more than just another investment in legal-adjacent services—it would place private capital alongside a firm serving regulated industries across multiple jurisdictions.

The MSO workaround

The proposed structure relies on a management services organization, a model that separates the lawyer-owned legal practice from non-legal business operations. Under this arrangement, an MSO—potentially backed by private equity—would handle technology, finance, human resources, marketing, and other administrative functions, while attorneys retain control over legal work and professional judgment.

American Bar Association Model Rule 5.4 generally prohibits fee-sharing with non-lawyers, non-lawyer ownership of law firms, and arrangements that allow non-lawyers to direct a lawyer’s professional decisions. MSO structures aren’t automatically compliant. Their legality depends on jurisdiction-specific rules governing ownership, fees, control, client confidentiality, and conflicts of interest.

Here, investors would own or fund the business platform, while lawyers maintain authority over the legal practice. The approach mirrors how some firms have worked within regulatory limits in accounting and healthcare.

A precedent in professional services

Charlesbank has already tested a similar model. In 2024, it invested in accounting and advisory firm Aprio, which restructured into two entities: Aprio LLP, a licensed CPA practice handling attest services, and Aprio Advisory Group LLC, a separate entity providing tax, consulting, and other non-attest services. The capital infusion supported technology upgrades, talent recruitment, and expansion, though financial terms weren’t disclosed.

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They later helped Aprio build its mergers and acquisitions capabilities, recruit leadership, and develop AI-powered tools. That experience suggests Charlesbank would apply a comparable strategy to WSHB, reinforcing the separation between regulated legal work and investor-backed operations.

For law firms, the appeal of outside capital is clear. Rising costs for AI, cybersecurity, data infrastructure, and lateral hiring have strained the traditional partnership model, which often distributes profits annually and struggles with long-term investments. Private equity offers both capital and operational expertise—but Rule 5.4 and state ethics rules set strict limits.

The WSHB deal, if completed, wouldn’t mean private equity outright owns a law firm. Instead, it could serve as a high-profile test of whether MSO structures can work at scale in corporate litigation. Regulators and competitors would likely examine how the arrangement handles professional independence, investor conflicts, data governance, and control over firm strategy.

Regulatory challenges

Rules for non-lawyer ownership in the U.S. vary widely. Arizona permits alternative business structures that allow outside investment, while Washington, D.C., has limited provisions for non-lawyer ownership in certain cases. Most states maintain strict prohibitions, leaving MSO arrangements as the primary way for outside capital to enter the sector.

That inconsistency means any deal involving WSHB would face close scrutiny—not just from bar associations but from clients in highly regulated industries. The firm’s insurance and corporate litigation work could raise concerns about how investor interests align with attorney obligations to clients.

Even if the talks collapse, the negotiations signal growing private equity interest in Big Law. The issue isn’t whether capital will flow into the sector, but how regulators will respond to a model already changing other professions.

A similar dispute over corporate accountability was recently resolved when a judge dismissed a high-profile case against Google, highlighting the complexities of legal oversight in large organizations.